Widgets become invisible in designer when moving away from canvas center

Sometimes I like to create widgets with several menu containers spread out in the widget designer where I can edit each of them easily, and then dynamically position them when the widget is loaded.

But the widget designer has a problem where if you drag the view too far away from the center, widgets begin to disappear while in a medium zoom, but it doesn’t happen when zoomed all the way out.

When zoomed out, everything is visible:

When zoomed in a bit and panned away from center, widgets disappear: